Jeep Offers

I came up with a brilliant idea that is like ebay but with raffle tickets. The reason why I am putting it on here is because everyone told me I could not develop the site over gambling issues. This idea will give a chance for someone to win an item on a website for the price of a raffle ticket and it will give the person raffling the item a chance to make more money through the raffle tickets sold than the item is actually worth. If 5000 people around the world buy a raffle ticket for a home at 300.00 per ticket the person raffling the home will get $1,500,000.00 for a home thats only worth 500,000.00 this is just an example. This website can raffle anything from cars to homes to furniture etc… but does anyone know how I can put it to market without the legal issues of running such site?
This idea is in currently in the hands of a patent attorney that specializes in business ideas.